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zeion
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Homework Statement
Suppose the linear operator T on P1 over R has the matrix
3 -2
1 0
with respect to A = B = {1-x, x}. Find the matrix of T with respect to A' and B' = {2-x, 1}.
Homework Equations
The Attempt at a Solution
I don't understand why there needs to be two different sets A and B if they are they same?
Need A'A (transition matrix from A to A'), so I write A with respect to A' and get
[1-x]A' = (1, -1)
[x]A' = (-1, 2)
Then A'A =
1 -1
-1 2
Then A'A[T]A = [T]A'
So
(1 -1) (3 -2) (2 -2)
(-1 2) (1 0) = (-1 2) = [T]A'
But it's wrong?